Vulnerability Details CVE-2019-20394
A double-free is present in libyang before v1.0-r3 in the function yyparse() when a type statement in used in a notification statement. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 43.9%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1793932
- https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6
- https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
- https://github.com/CESNET/libyang/issues/769
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1793932
- https://github.com/CESNET/libyang/commit/6cc51b1757dfbb7cff92de074ada65e8523289a6
- https://github.com/CESNET/libyang/compare/v1.0-r2...v1.0-r3
- https://github.com/CESNET/libyang/issues/769
- https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html
Products affected by CVE-2019-20394
-
cpe:2.3:a:cesnet:libyang:0.11
-
cpe:2.3:a:cesnet:libyang:0.12
-
cpe:2.3:a:cesnet:libyang:0.13
-
cpe:2.3:a:cesnet:libyang:0.14
-
cpe:2.3:a:cesnet:libyang:0.15
-
cpe:2.3:a:cesnet:libyang:0.16
-
cpe:2.3:a:cesnet:libyang:1.0